to make an O-ring you do not heat up the ends. the ends are prepped with emery cloth, cleaned in alchohol, then glued with a special O-ring glue by Loctite, then cleaned with a cleaning solution by Loctite then a protective coating of a liquid rubber goes over the joint. extremly strong. i should know i make them almost daily when working on the ships... O-ring stock is leaps cheaper then ordering specialty O-rings
Cody McMillan
Marine Engineer
6046573770
From: empiricus@telus.net
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] sikaflex suggestion
Date: Mon, 7 Sep 2009 20:53:50 -0700
A thought on Sikaflex - it's used in conventional boatbuilding and is a bear to remove.
Have you considered making your own O-rings? You can get it in many diameters. Comes in rolls. I believe you heat up both ends (of any length) and join them together. Lay down two or three O-rings of any shape but make sure to offset the joins.
Rick Lucertini
Vancouver, Canada
----- Original Message -----
Sent: Friday, July 17, 2009 7:46 AM
Subject: RE: [PSUBS-MAILIST] sikaflex suggestion
You know what might have happened Emile is that it might have been too cold when I installed it. After all, it is called ROOM TEMPERATURE vulvanization. Just speculating, I don't really know why it stayed liquid.
The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it.
RTV isnt that bad. I have good results with peppers dome (210 meter!) . Fix and forget. Does not stay liquid.
Emile
Van: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] Namens Recon1st@aol.com
Verzonden: donderdag 16 juli 2009 18:46
Aan: personal_submersibles@psubs.org
Onderwerp: Re: [PSUBS-MAILIST] sikaflex suggestion
Good luck Vance. The quick and dirty seems right for my small viewports. Don't foresee
any removal in the near future. Besides I have always enjoyed destruction ehheheh
In a message dated 7/16/2009 9:17:29 A.M. Central Daylight Time, vbra676539@aol.com writes:
Yeah, understood. The point to RTV for George was that it serves both as gasket and sealant, ie., quick and dirty, and it works. Not fun later, as I said, but it's great stuff. I was thinking of cutting thin red rubber gaskets (1/8" thickness) then using a thin coating of RTV on both sides. That would give me the soft barrier and less vulcanized goo down the road. Wish me luck
Vance
-----Original Message-----
From: Recon1st@aol.com
To: personal_submersibles@psubs.org
Sent: Wed, Jul 15, 2009 9:05 pm
Subject: Re: [PSUBS-MAILIST] sikaflex suggestion
That is what I have heard about RTV. So I am assuming then you would use
Sikaflex. It sounds right but there about 400 different versions. Hard on a poor old
In a message dated 7/15/2009 7:39:06 P.M. Central Daylight Time, vbra676539@aol.com writes:
I haven't looked into it. Mine were bedded in RTV, which sealed effectively, but were not what I'd call great fun to get out again for paint, etc. Sikaflex doesn't cure the same way, and never takes a set. RTV is, of course, the acronym for room temperature vulcanizing, and they ain't kidding. It bonds and sets up something fierce. The other problem with it is that RTV can't be repaired. It won't bond chemically to itself once the original application kicks. Meaning that if you have a leaker, you get to try out the car jack again to break the port loose (and hope that the RTV is the ONLY thing that breaks). In either case, you have to start scraping and go back to square one. What a pain. Trust me, there will never be another submarine in my garage with goop sealed ports. Never.
Vance
-----Original Message-----
From: Recon1st@aol.com
To: personal_submersibles@psubs.org
Sent: Wed, Jul 15, 2009 8:20 pm
Subject: [PSUBS-MAILIST] sikaflex suggestion
I have been looking at sikaflex for my viewports and did not realize the number
Any suggestions on which one to use?
Checked by AVG - www.avg.com
Version: 8.5.387 / Virus Database: 270.13.16/2241 - Release Date: 07/16/09 05:58:00
New! Open Hotmail faster on the new MSN homepage!
|